Megavoltage CT (MVCT) Based Evaluation of Internal Target Volume in Patients Undergoing Tomotherapy-based Image Guided Intensity Modulated Radiation for Gastric Cancers

2012 ◽  
Vol 84 (3) ◽  
pp. S317
Author(s):  
A. Aggarwal ◽  
S. Chopra ◽  
R. Engineer ◽  
R. Phurailatpam ◽  
S. Paul ◽  
...  
Keyword(s):  
Target Volume ◽  
Internal Target ◽  
Internal Target Volume ◽  
Gastric Cancers ◽  
Image Guided ◽  
Intensity Modulated ◽  
Megavoltage Ct

scholarly journals Internal target volume for post-hysterectomy vaginal recurrences of cervical cancers during image-guided radiotherapy

2015 ◽  
Vol 88 (1054) ◽  
pp. 20140783 ◽  
Author(s):  
Maheshkumar N Upasani ◽  
Supriya Chopra ◽  
Reena Engineer ◽  
Umesh Mahantshetty ◽  
Seema Medhi ◽  
...  
Keyword(s):  
Target Volume ◽  
Internal Target ◽  
Internal Target Volume ◽  
Image Guided Radiotherapy ◽  
Cervical Cancers ◽  
Image Guided

scholarly journals Stereotactic body radiotherapy using the forward-planned static-port tomotherapy for lung cancer: a novel planning technique with the newly-developed mode

2020 ◽  
Vol 61 (6) ◽  
pp. 993-998
Author(s):  
Yoshihiko Manabe ◽  
Akifumi Miyakawa ◽  
Takuhito Kondo ◽  
Yuki Yamada ◽  
Seiji Hashimoto ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Stereotactic Body Radiotherapy ◽  
Maximum Dose ◽  
Intensity Modulated Radiotherapy ◽  
Conformal Radiotherapy ◽  
Target Volume ◽  
Internal Target ◽  
Internal Target Volume ◽  
Intensity Modulated ◽  
Planning Technique

Abstract With the newly-developed static-port forward-planning (FP) mode of tomotherapy, the ratio of the dose of the planning target volume (PTV) periphery to the maximum dose can be easily adjusted by modifying leaf margins when planning stereotactic body radiotherapy (SBRT). The purpose of this study was to evaluate the characteristics of FP plans compared to helical intensity-modulated radiotherapy (IMRT) and helical 3D conformal radiotherapy (3DCRT) plans of SBRT for lung tumors. The three plans were created for 14 tumors in 11 patients. For 13 tumors, 60 Gy in 7.5-Gy fractions was prescribed for a minimum coverage dose of 95% of the PTV (D95). The prescribed isodose line (PIL) was intended to be 60–80% of the maximum dose. Nine angles were used for the FP plans. The median D98 and D50 of the internal target volume for FP, helical-IMRT and helical-3DCRT plans were 70.4, 71.4 and 60.5 Gy, respectively (P < 0.001), and 77.7, 75.7 and 62.3 Gy, respectively (P < 0.0001). The median PIL and the lung volume receiving ≥20 Gy (V20) were 73.4, 73.4 and 94.3%, respectively (P < 0.0001), and 4.7, 4.0 and 5.7%, respectively (P < 0.0001). These parameters were not significantly different between the FP and helical-IMRT plans. The median beam-on times were 238.6, 418.9 and 197.1 s, respectively (P < 0.0001). The FP plans reduced the beam-on time by 43% compared to the helical-IMRT plans. The dose distribution of the FP plans was comparable to that of the helical-IMRT plans. The helical-3DCRT plans could not adjust PIL to be 60–80%.

PO-0690 INTERNAL TARGET VOLUME MARGINS FOR PROSTATE AND SEMINAL VESICLES ASSESSED WITH CINE-MRI

2012 ◽  
Vol 103 ◽  
pp. S268-S269
Author(s):  
S. Gill ◽  
K. Dang ◽  
C. Fox ◽  
M. Bressel ◽  
N. Bergen ◽  
...  
Keyword(s):  
Target Volume ◽  
Seminal Vesicles ◽  
Cine Mri ◽  
Internal Target ◽  
Internal Target Volume
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